package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.RoleDao;
import com.itheima.dao.UserDao;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Set;

@Service(interfaceClass = UserService.class)
@Transactional
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;

    @Autowired
    private RoleDao roleDao;

    @Autowired
    private PermissionDao permissionDao;

    //根据用户名查询数据库，获取用户信息和关联的角色以及权限信息
    public User findByUsername(String username) {
        //查询用户基本信息，不包含用户角色
        User user = userDao.findByUsername(username);
        if(user == null){
            return null;
        }

        Integer userId = user.getId();
        //根据用户id查询对应的角色
        Set<Role> roles = roleDao.findByUserId(userId);

        for (Role role : roles) {
            //根据角色id查询对应的权限
            Integer roleId = role.getId();
            Set<Permission> permissions = permissionDao.findByRoleId(roleId);
            role.setPermissions(permissions);//设置角色权限
        }

        user.setRoles(roles);//设置用户角色
        return user;
    }
}
